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(No Model.)

G.. s. BARTLETT.

l Pump. No.232,666. Patented Sept. 28,1880.

FIGQZ.

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UNITED STATES PATENT Al'EEicE.

GEORGE S. BARTLETT, OF LEON, IOWA, ASSIGNOR OF ONEIIALF OF HIS RIGHT TO H. THOMAS, OF SAME PLAGE.

PUMP.

SPECIFICATION forming part of Letters Patent No. 232,66,.dated September 28, 1880.

Application filed .August 18, 1880. (No model.)

To all whom t may concern Be it known that I, GEORGE S. BARTLETT, a citizen of the United States, resident at Leon, in the county of Decatur and State of Iowa, have invented certain new and useful Improvements in Pumps; and I do hereby declare the and in which there are other improvements, all

of which will be fully hereinafter described, and pointed out in the claims.

In the drawings, Figure l is a vertical 4section of a pump constructed according to my invention. Fig. 2 is the plate which forms, with the necessary packing, the lower checkvalve. Fig. 3 is a section of tubing, showing the check-valve iixed thereon. Fig. 4 is the tripping-lever, and Fig. 5 shows the packingrings for the piston.

a is the cylinder, which is provided with the side pipe or vent, a'. In the lower end of the cylinder the end of the stock or tube a2 is fixed, with its upper part flush, or nearly flush, with the lower side ofthe side pipe, a; and in the upper end ofthe pipe a' is fixed the lower end of the stand-pipe co3, through which the water is forced to the discharge-spout a4.

Within the upper end of the cylinder there is placed the piston b, fixed to the lower end of the piston-rod b, which has its upper end attached to the hand-leverbz. The hand-lever is pivoted on a fulcrum xed on the side of the stand-pipe a3. The piston b has formed'in its periphery a series of grooves or channels, in which are placed packing-rings b4. The rings b4 are open at one side, and are so formed that their ends overlap, and when put into the channels in the piston pack the latter perfectly in the cylinder.

d is the lower check-valve, placed on the upper end of the tube c2. Itis composed of the swinging or free end of, the valve e.

plate d and a suitable packing, d2. It is pivoted to the tube a2, as shown, and is extended beyond the pivotal connection, so as to provide a short arm, d3. The pivotal connection of the valve is arrangedon the same side of the cylinder with the pipe o', and so that the arm d3 will be about on the central line of said e is the upper check-valve, placed in the upper end of the pipev a', just below the lower end of the stand-pipe a3, as shown. It prevents the water from falling back when the piston b is raised. It is of ordinary construction and operation.

f is a tripping-valve, which is arranged to turn on a pivotal center, f', xed in the pipe c. Its end f2 is curved to correspond to the curvature of the pipe a', and is carried just to the under side of, but not so that it touches the Its inner end, f3, extends just into the cylinder, and is provided with the upper arm, f4, and the lower arm, f5. The upper arm extends upward in the cylinder to a point where it will be struck by the piston when the latter is thrust down a little lower than it is ordinarily pushed in the process of pumping. The lower arm, f5, is made to reach to, and so that it will strike, the end d3 of valve d, as shown in Figs. l and 3.

By depressing the piston a little more than required for pumping it will strike the upper end of the arm fi* and cause the lever j' to turn on its pivot f', which movement brings the end f5 against the arm d3 and opens the valve d, and at the same instant the end f2 strikes, raises, and opens the valve e, as indicated in Fig. 1. Both valves being open the water will run down out of the stand-pipe into the well.

' It will be seen that the water can be lowered in the stand-pipe to any desired point, or it may all be drawn out, as may be desired.

As soon as the pressure by the piston on the lever fis removed the valves will drop into their seats and close the pipes.

Having thus described myinvention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a force-pump, the tripping-lever, ar-

ranged within the discharge pipe and cylinder,

so that it willbe engaged by the piston and open both cheek-valves, substantially as set forth.

2. In a pump, the combination, with the cyl- 5 nder having a side pipe, the piston, the upper check-valve, and the lower check-valve having a rear arm projeetin g from its pivotal end, of

a tripping-lever pivoted in the discharge-pipe,

and having one end extended to the upper 1o cheek-valve and its opposite end extended into 

